Yes you can get admission in Interior designing Courses after passing 10th grade examination . after 10th grade you have to pass 12th grade examination for admission in Interior designing courses..

Interior designing Course after 12th are :
Diploma in Creative Graphic Design
Diploma in Interior Design
Diploma In Interior Design & Display (Graduates)
Diploma In Interior Design & Display (Professional)
Diploma in Interior Designing and Decoration
Diploma in Interior Styling

Other courses :
B.A. (Hons) (Interior Architecture Design)
B.A. (Interior Architecture and Design)
B.A. (Interior Design)
B.Arch. (Interior Design)
B.Des. (Interior Design)
B.Sc (Hons.) Interior Design
B.Sc. (Interior Design)
Bachelor of Interior Design and Decoration - B.Sc (ID & D)
M.Arch. (Interior Design)
M.B.A. (Interior Design)
M.Sc. (Interior Design and Resource Management)
M.Sc. (Interior Design)
Interior Designing Diploma Courses
Advance Diploma In Interior Design & Display
Advanced Diploma in Interior Design
Advanced Diploma in Interior/Architectural Designing Pro

Graduate Diploma in Interiors and Furniture Design
Post Graduate Diploma in Interior Designing
Post Graduate Diploma in Interior Designing & Decoration
Post Graduate Diploma Programme in Design Toy and Game Design
Interior Designing Certificate Courses
Certificate Course in Imitation Jewelry
Certificate Course in Interior Design
Certificate Course in Interior Designing and Decoration